[INFO] updating cached repository flada-auxv/squealing-octo-chainsaw
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/flada-auxv/squealing-octo-chainsaw
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/flada-auxv/squealing-octo-chainsaw" "work/ex/beta-1.38-1/sources/1.37.0/gh/flada-auxv/squealing-octo-chainsaw"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/flada-auxv/squealing-octo-chainsaw'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/flada-auxv/squealing-octo-chainsaw" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/flada-auxv/squealing-octo-chainsaw"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/flada-auxv/squealing-octo-chainsaw'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d64cf5a0dfae0f6d79fedd0f2d204773839cec96
[INFO] sha for GitHub repo flada-auxv/squealing-octo-chainsaw: d64cf5a0dfae0f6d79fedd0f2d204773839cec96
[INFO] validating manifest of flada-auxv/squealing-octo-chainsaw on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of flada-auxv/squealing-octo-chainsaw on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing flada-auxv/squealing-octo-chainsaw
[INFO] finished frobbing flada-auxv/squealing-octo-chainsaw
[INFO] frobbed toml for flada-auxv/squealing-octo-chainsaw written to work/ex/beta-1.38-1/sources/1.37.0/gh/flada-auxv/squealing-octo-chainsaw/Cargo.toml
[INFO] started frobbing flada-auxv/squealing-octo-chainsaw
[INFO] finished frobbing flada-auxv/squealing-octo-chainsaw
[INFO] frobbed toml for flada-auxv/squealing-octo-chainsaw written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/flada-auxv/squealing-octo-chainsaw/Cargo.toml
[INFO] crate flada-auxv/squealing-octo-chainsaw already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/flada-auxv/squealing-octo-chainsaw/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing flada-auxv/squealing-octo-chainsaw against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/flada-auxv/squealing-octo-chainsaw:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 3d956054a7cac3517945fcd849eba03ca703db8ffc27bd33d9bedee67372da0d
[INFO] running `"docker" "start" "-a" "3d956054a7cac3517945fcd849eba03ca703db8ffc27bd33d9bedee67372da0d"`
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling janjanjan v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/janjanjan/tile.rs:59:32
[INFO] [stderr]    |
[INFO] [stderr] 59 |         use rand::{thread_rng, Rng};
[INFO] [stderr]    |                                ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `shuffle` found for type `rand::prelude::ThreadRng` in the current scope
[INFO] [stderr]   --> src/janjanjan/tile.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         rng.shuffle(&mut ret);
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `janjanjan`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3d956054a7cac3517945fcd849eba03ca703db8ffc27bd33d9bedee67372da0d"`
[INFO] running `"docker" "rm" "-f" "3d956054a7cac3517945fcd849eba03ca703db8ffc27bd33d9bedee67372da0d"`
[INFO] [stdout] 3d956054a7cac3517945fcd849eba03ca703db8ffc27bd33d9bedee67372da0d